Calculating-machine.



G. A. MEILICKE CALCULATING MACHINE.

APPLICATION FILED JULY 27, 1908.

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INLJENTDH'. M m flij C. A. MEILICKE.

CALCULATING MACHINE.

APPLICATION FILED JULY 27, 1908.

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U. A. MEILIUKE.

CALCULATING MACHINE.

APPLICATION FILED JULY 27, 1908.

PatenfedJune 14,1910.

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WITNESSES EWMSQ JM 74 6 INUENTDR Qn-WMM GPA. MEILICKE.

CALCULATING MACHINE.

APPLIOATION FILED JULY 27, 1908.

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Patented June 14,

m u MM EM mm G. A. MEILICKE. CALCULATING MAGHINE. APPLIOATIOH FILED JULY 27, 1908.

Patented June 1 4, 1910.

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0. A. MEILIOKE. CALCULATING MACHINE. APPLICATION FILED JULY 27, 1908.

961,631 Patented June 14,1910.

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To 0 .EIELEL PM A WITNESSES INUENTDF? mxw- MW 0. A. MEILI KE. CALCULATING MACHINE. APPLICATION IIiED JULY 27, 1908.

Patented June 14, 1910.

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8 2 E 0 2 V E 8 4 INUENTDH M1 MM 1,5 WITNESSES CARL ARNO MEILICKE, OF HANLEY, SASKATCHEWAN, CANADA.

CALCULATING-MACHINE. I

Specification of Letters Patent.

Patented June 14, 19'10.

Application filed .luly 21, 1908. Serial No. 445,512.

To all whom it may concern:

Be it known that I, CARL Anne Mninic tn, of the town of Hanley, in the Province of Saskatchewan, Canada, lumber merchant, have invented certain new and useful Improvements in Calculating- Machines. oit' which the following is the specification.

My invention relates to improvements in calculating machines and the object of the invention is to produce a simple mechanism which especially applicable in computing the number of days from one date to another, either past or future andin finding the interest on a note for the given number of days.

The invention consists in the construction and combination of parts to be described more fully hereinafter, and definitely set forth in the claims.

Figure 1 a front elevation of my machine. Fig. 2 is a. vertical section View through the machine in the line X X, Fig. 1. Fig. 3 is an enlarged detailed front view of the dials. Fig. 1 is an enlargtal detailed vertical sectional view of the upper portion of the machine as shown in Fig. 2. Fig. 5 is an enlarged fragmentary view of the dials, showing the arrangement of the months and days. Fig. 6 is an enlarged view 01'' the right hand portion of the inachine as shown in Fig. 1, part of the casing being broken away so as to show the interconnection between the drum and the dials. Fig. 7 is an enlarged detailed side elevation of an adjuster employed in connection with the belt. Fig. 8 is an end view of the drum showing its attachments for adjusting purposes. Fig. 9 is an end view of the drum and the belt receiving wheel at the end .of,

the drum showing the manner in which the one may be adjusted in respect to the other. Fig. 10 is a side elevation of the drum, the knob connected with the drum, and the belt receiving wheel; parts of the drum, belt receiving wheel, and knob being shown in vertical section. Fig. 11 represents a portion of the tabulated plate. carried by the inelosed casing of the drum. and also a portion of the interest chart on the drum. Fig. 12 is a vertical sectional view taken through the machine in the plane denoted by the line Y Y, Fig. 6.

In the drawings like characters of reference indicate corresponding parts in eacl figure.

1 represents an inclosing casing which is prior substantially cylindrical in form and disposed with its axis horizontal, and 2 is an upwardly extending portion opening into ,the casing and having the upper portion 3 thereof circular in vertical cross section and the other portion l substantially rectangular in longitudinal cross section. The portion 4 opens into the cylindrical casing and forms the support for the circular part 3. The casing is formed into a suitable base at 5 adapted to rest upon a horizontal support such as a table or desk. At a suitable point prefen ably upon the upper side the wall of the cylindrical casing is provided with an elongated slot (3 which passes across the casing.

7 is a plate which has an elongated slot 8 which is used as a sight opening. The plate suitably bolted to the casing cover ing over the slot or opening 6, and above the slot is'a computed interest table 9 and below a second table 10, such tables being identical with those 24 and 25 which. appear and are completely described in a prior application for a calculating machine, filed by me on the tth day of March, 1908. under Serial #419215. It is considered'that further description of this portion of the present machine is unnecessary.

The portion 3 is provided with a circular opening 11 in the forward face for a purpose later described.

12 and 13 are thumb heads each formed. integral with a sleeve 14c which is'received in bearings 15 carried by the casing. The sleeves are each formed with a shoulder 16 which rests against the respective bearings. 17 is a longitudinal shaftor axle having'its ends threaded at 18 and screwirg' intothe threaded centers of the sleeves. la is a drum of cylindrical form rigidlyfastcned to the shaft by means of radial ribs or spokes 20 passing to the hub 21 which is in turn connected to the shaft so that turning the thumb h ads enables the drum to be rotated as de sired. The drum is slit longitudinally at 22 and a wedge-shaped strip 23 is passed into the opening, such strip being interconnected with a radial rod 2a having a thumb screw 25 at the end thereof which screw bears on a cross brace 26 passing between the spokes. All these latter members as denoted by the numbers 12 to 16, respectively, are of the same form and interconnected in the same manner as the eoiyresponding part'sin' the" application for patent above men tioned.

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(Urea stated previously that the hub at is normally somewhat away from the sleeve 36. The inward movement of the dial as caused by the longitudinal dlsplacement of the shaft disengages the stop and consetpiently allows the inner dial to be rotated without the outer dial. As soon as the knob is re leased the spring forces the stop into en gagement with the teeth and the two dials will rotate together.

64 is a drive wheel rotatably mounted on the. sleeve 14 and it is provided with circumferential flanges G5 and (it) at its sides. Between the flanges and extending from the periphery of the wheel are pins or teeth (3? spaced equal distances apart.

68 and G9 are adjustable screws suitably mounted in bearings formed in ribs 70 carried by the wheel 64. The screws are so positioned on the inner face of the wheel that they converge as is shown in Fig. 9 of the drawings.

71 is a rib passing between the spokes 2t), and 7 2 is an arm of triangiilar cross section extending from the rib toward the wheel (34 where it is received between the adjusting screws (58 and 69. Consequently, although the wheel 64 is rotatably mounted it cannot turn on account of the screws engagii'lg with the arm. 13y tightening one of the adjusting screws and loosening the other he relative position of the wheel til to the drum shaft can be changed, which adjustment. is of considc able importance as will shortly appear.

73 is a horizontal shaft passing across the portion 4, and 74 is a flanged wheel rotatably mounted on the shaft and positioned so that it is in the same vertical plane as the wh l .3. The shaft is so positioned. that a ,bclhwith a half twist in it. passing tangent to the wheel downwardly from the horizontal axis will have its lower end pass tangent to the wheel (it at its horizontal axis.

7 5 are lugs extending out 'ardly from the side faces of the machine, such lugs being provided with axial openings into which pass a threaded screw 76. The lower end of the screw is designed totnrn freely in the lower 111 The upper end of the screw turns freely in the upper lug and is provided with a shoulder 77 which abuts the lower face of the lug thereby preventing the screw from escaping upwardly.

78 is a plate supported against the inner face of the casing by means of laterally projecting pieces 70 which pass through slots 80 and 81 provided in the casing. The upper piece it) is bored and provided with an internal thread which receives the screw 76. The lower of the pieces Tl) serves to aline the plate.

82 is a flanged roller rotatably mounted on a stub shaft or pin 83 which extends from the inner face of the plate 78. This roller together with the adjusting screw serves the purpose of a belt tightener.

St is a shaft somewhat inclined to the horizontal passing across the portion l of the casing above the shaft 73.

85 is a flanged wheel rotatably mounted on the shaft, such wheel being positioned somewhat forward of the wheel 74. The shaft S-l is so positioned that a twisted belt passing tangent from the horizontal axis will be directed to-thc roller 82.

EU is an endless metallic belt havinga series of equally spaced openings 87 therein, the dist ancc which the openings are spaced being the distance which the pins 67 and 4h, res ect ivel v are apart}; The belt passes from the upper side'ofth'c wheel -l3 directly to the upper side of the wheel 85 where it is given a,ha'li turn and directed downwardly under the roller From the roller 52 it passes over the wheel (ll where it is given a half turn and is directed over the wheel 7i whence it. returns to the wheel 43. If the belt be at any time slack such can be taken up by adjusting the screw 76 so as to throw the roller 82 downwardly.

89 represents a separate calculating machine which is for the purpose of reducing fractions of pounds. English money, to shillings and pence, but as it forms no part of the present invention 1 will not further de scribe it.

\l'hcn the belt is being placed on the wheels it is necessary that they be interconnected so that when the. blank longitudmal row on the drum appears through the sight opening 8 the blank or blackened division 51 will appear opposite the stationary pointer (33. If it be found that the drum and dial are not interconnected as above described, after the machine has been assembled the necessary adjustn'ient can be produced by means of the screws 68 and (59 which change the relative positions of the wheel (34 and the drum.

In order that the manner of making calculation may be better understood I will now give several examples, and in order to ayoid prolixity I will confine myself to the same examples as were given in the specification hereinbefore mentioned in which it was required to compute the interest on a note which matures on December the 30, the present date being considered as January 3rd. In order to find'the number of days between these dates, the present date, 0.,

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INSULATOR. APPLIOATION FILED APR.24, 1909.

Patented June 14, 1910..

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